Learn about CVE-2021-21203 vulnerability in Google Chrome before version 90.0.4430.72, allowing remote attackers to exploit heap corruption via crafted HTML pages. Find out the impact, affected systems, and mitigation steps.
A detailed overview of the CVE-2021-21203 vulnerability found in Google Chrome prior to version 90.0.4430.72, allowing remote attackers to potentially exploit heap corruption.
Understanding CVE-2021-21203
This section covers the essential information about the CVE-2021-21203 vulnerability in Google Chrome.
What is CVE-2021-21203?
The CVE-2021-21203 vulnerability refers to a use after free issue in Blink in Google Chrome versions prior to 90.0.4430.72. It enables a remote attacker to potentially exploit heap corruption through a carefully crafted HTML page.
The Impact of CVE-2021-21203
The vulnerability could lead to a remote attacker causing heap corruption and potentially executing arbitrary code on the victim's system, posing a significant security risk to affected users.
Technical Details of CVE-2021-21203
In this section, we delve into the technical aspects of the CVE-2021-21203 vulnerability.
Vulnerability Description
The vulnerability arises from a use after free issue in Blink in Google Chrome versions before 90.0.4430.72, allowing remote attackers to exploit heap corruption via malicious HTML pages.
Affected Systems and Versions
Google Chrome versions earlier than 90.0.4430.72 are impacted by this vulnerability, putting users of those versions at risk of exploitation.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by luring users to visit a specially crafted HTML page, triggering the use after free issue and executing arbitrary code remotely.
Mitigation and Prevention
This section outlines essential steps to mitigate the CVE-2021-21203 vulnerability and prevent potential exploitation.
Immediate Steps to Take
Users are advised to update their Google Chrome browsers to version 90.0.4430.72 or higher to patch the vulnerability and protect their systems from potential attacks.
Long-Term Security Practices
In addition to immediate patches, users should practice safe browsing habits, avoid clicking on suspicious links or visiting untrusted websites to minimize the risk of similar vulnerabilities.
Patching and Updates
Regularly updating Google Chrome to the latest version is crucial to ensure protection against known vulnerabilities and to benefit from the latest security enhancements.